brevet vs commission

brevet

noun
  • A military document entitling a commissioned officer to hold a higher rank temporarily, but without an increase in pay. 

  • An organized, long-distance bicycle ride — not a race, but a test of endurance — which follows a designated but unmarked route passing through check points. 

  • A warrant from the government, granting a privilege, title, or dignity, as in France. 

  • An authoritative grant or mark of recognition; a seal of approval. 

verb
  • To promote by brevet. 

commission

noun
  • An official charge or authority to do something, often used of military officers. 

  • A fee charged by an agent or broker for carrying out a transaction. 

  • The thing to be done as agent for another. 

  • The act of committing (e.g. a crime or error). 

  • A sending or mission (to do or accomplish something). 

  • A body or group of people, officially tasked with carrying out a particular function. 

verb
  • To put into active service. 

  • To send or officially charge someone or some group to do something. 

  • To place an order for (often a piece of art). 

How often have the words brevet and commission occurred in a corpus of books? (source: Google Ngram Viewer )